Bar-spring eyeglass-frame.



' No. 733,520. PATENTBD JULY 14, 1903..

H. TREMBLAY. BAR SPRING BYEGLASS FRAME.

APPLIGATION FILED FEB. 21, 1903.

N0 MODEL.

"m: mums vtrsizs 50.. Women wAsdncrou, n.

No. 733,520. PatentedJuly 14., 1903.

UNTTED STATES ATENT OFFICE.

HORMIDAS TREMBLAY, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO HORMIDAS L. BEDARD, OF SOUTHBRIDGE, MASSACHUSETTS.

BAR-SPRING EYEG LASS -FRAM E.

SEECIFILGATION forming part of Letters Patent No. 733,520, dated July 14, 1903.

Application filed February 21,1903. Serial No. 144,403. (No model.)

To 107w? it Z/ 007606771! each other. To'overcome this objection and Beit known that I, HORMIDAS TREMBLAY, a at the same time to provide a more uniform citizen of theUnited States, residing at Southpressure for holding the eyeglass-frames in bridge, in the county of Worcester and State place on the nose of the wearer, a number of 55 of Massachusetts, have invented a new and eyeglass-frames have been devised in which useful Bar-Spring Eyeglass-Frame, of which bar-springs'are employedthat is to say, in the following is a specification. constructions of this class small spiral springs This invention relates to that class of eyeare used for the lens-carrying slides, which glass-frames in which lenses are movable in slides are movable toward and away from 60 IO a straight line toward and away from each each other in a straight line.

other as distinguished from the ordinary or The especial object of my presentinvention older form of eyeglass-framesin which lenses is to provide a bar-spring eyeglass-frame the are supportedin the arms of a spring-yoke. parts of which may be stamped out by ma- The especial objects of this invention are chinery and which may be put together with- 65 r: to provide a strong, simple, durable, and inout soldered or riveted joints, the parts of expensive form of eyeglass-frame in which a complete frame constructed according to the parts are assembled and secured together my invention being detachable without bendwithout soldering and which can be dismaning or springing any of the parts out of place, tled or taken apart whenever it is desired to so that the construction may be taken apart 7o renew or replace any of the pieces thereof. whenever it is to be repaired or parts thereof To these ends this invention consists of a replaced. bar spring and of a combination of parts To accomplish these ends, abar-spring eyetherein, as hereinafter described, and more glass frame constructed according to my inparticularly pointed out in the claims at the vention comprises a longitudinal slotted 75. end of this specification. guide-piece with lens-carrying slides which In the accompanying drawings, Figure 1 is are removably mounted in the guide-piece. a front View of a pair of eyeglasses provided Each of the lens-carrying slides is preferably with a bar-spring constructed according to provided withaT-shaped head which engages this invention. Fig. 2 is an enlarged perthe slot of the guide-piece and with a rod or 80 3o spective view with one of the lens-carrying arm which slides through a hearing at one slides detached from its center piece. Fig. 3 end of the guide-piece. The springs are coiled is a front view showing the manner in which upon the rods or arms of the lens-carrying the parts are assembled. Fig. 4 is an enslides, and the parts are so proportioned that larged front view showing the parts in their the springs will hold the slides in operative 85 normal position. Fig. 5 is a perspective view position; but by moving the T -head of a lensillustrating a modified construction and Fig. carrying slide toward the farther end of the 6 is a perspective view illustrating a second slot in the guide-piece the rod or arm of said modified form of construction. 7 slide will be moved out of its hearing, so

In the older and less expensive forms of that said lens-carrying slide may then be 90 4o eyeglasses the lenses are connected by a turned and its T-head disengaged from its spring-yoke, and the tension of this spring is slot, permitting the construction to be taken relied upon to hold glasses in place. This apart. ordinary form of eyeglass-frame has been Referring to the drawings for a detail defound to be objectionable in some cases, as scription of the construction as illustrated in 5 the lenses will be more or less inclined with Fig. 1, 10 designates a longitudinally-slotted respect to each other according to the shape sheet-metal guide-piece having turned-back of the nose of the wearer. This is especially ends which are perforated or provided with objectionable with the use of high-priced, esbearings. Combined with the sheet-metal pecially-ground lenses, in the use of which it guide-piece 10 are the sheet-metal lens-carry- 10c is desirable that the lenses shall not be tipped ing slides 11, each of which is provided with or tilted to different angles with respect to a T-shaped head for engaging the slot of the guide-piece 10 and with a rod or arm 12, which extends through a bearing at the end of the guide-piece 10. Thelens-carryingarms,which extend down from the slides 11, are provided with ears 13, which receive the lens or glasses L in the ordinary manner, and extendingin from these arms are the usual posts or studs 14, carrying the nose-pads, which may also be of the usual construction.

The manner in which an eyeglass-frame constructed according to this invention is as sembled is most clearly illustrated in Figs. 2, 3, and 4. Starting with the parts in the position illustrated in Fig. 2, the T-shaped head of the lens-carrying slide 11 which is to be secured is first inserted through the slot of the guide-piece 10. The parts are then moved to one end of the slot of the guide-piece 10, as shown in Fig. 3. This shifting of both lens-carrying slides to one end of the slot in the centerpiece 10 I regard as a feature of importance, because when the parts are in this position withoutspringing, straining,orbending any of the pieces the slide '11 can be turned to lock its T-shaped head in the slot and to introduce the end of its rod or arm 12 through its hearing at the end of its guide-piece 10, so that the parts will then occupy their assembled or normal position. (Illustrated in Fig. 4.)

In the tirstfour figures of thedrawings the slotted guide-piece 10 is illustrated as occupying a vertical position. In some cases it is desirable to have the guide-piece l0 arranged horizontally, so that it will have less tendency to obstruct the vision. This is best illustrated in Fig. 5. As shown in this figure, the leuse-carrying slide 15 may be provided with one less bend or angle than the form of lens-carrying part illustrated in the first four figures of the drawings. In some cases also the arms which carry the lenses may be formed by prolongations of the slides 12. A construction embodying this feature is shown in Fig. 6, in which the arms 16 are separated from body portions of the slides by notched or reduced sections 17 for permitting the parts to be introduced into their bearings at the ends of the guide-piece 10.

I am aware that other changes may be made in practicing my invention by those who are skilled in the art without departing from the scope thereof as expressed in the claims. I do not wish, therefore, to be limited to the constructions I have herein shown.

and described; but

What I do claim, and desire to secure by Letters Patent of the United States, is

1. As an article of manufacture, a barspring for eyeglasses, comprising a metal center piece having perforated ends at right angles with its body portion, and having a single longitudinal slot extending substantially the entire length of its body portion, and two metal slides, each having an arm extending through the perforation at one end of the center piece, and each having a T-head which is movable in the slot of the center piece to the opposite side of the middle point of the center piece from that which is normally occupied thereby, and springs mounted on the arms, whereby each of the slides may have its T-head entered into the slot of the center piece and moved therein to the opposite side of the middle point from that normally occupied thereby to permit its arm to be turned into line with one of the end perforations of the center piece and entered therein without bending or springing any of the parts.

2. As an article of manufacture, a barspring for eyeglasses, comprising a metal center piece having perforated ends at right angles with its body portion, and having a single longitudinal slot extending substantially the entire length of its bodyportion, and two metal lens-carrying slides, each having a spring-receiving arm, a lens-carrying arm, and a T-head normally located on the opposite side of the center piece from said arms, and movable in the slot of the center piece to the opposite side of the middle point of said slot from that normally occupied by said T-head, whereby by entering the T-head alone through the slot of the center piece and carrying the T-head to the opposite side of the middle point of the slot from that normally occupied thereby, the spring-carrying arm may be brought into line with and entered into an end bearing of the center piece without springing or bending any of the parts.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HORMIDAS TREMBLAY.

Witnesses:

PHILIP W. SOUTHGATE, J. ELMER HALL. 

